320 GC Hydraulic Excavator

320 GC Hydraulic Excavator

360° Exterior View

The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a new comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance ...


Engine Model
Cat C4.4 ACERT
Net Flywheel Power
Engine RPM - Operation
Engine RPM - Travel
Net Power - SAE J1349
Gross Power - SAE J1995


Maximum Drawbar Pull
Maximum Travel Speed
Maximum Gradeability

Service Refill Capacities

Fuel Tank Capacity
86.6gal (US)
Cooling System
6.6gal (US)
Engine Oil
4gal (US)
Final Drive - Each
1.3gal (US)
Hydraulic System - Including Tank
61.8gal (US)
Hydraulic Tank
30.4gal (US)
Swing Drive - Each
1.3gal (US)
DEF Tank
10.3gal (US)

Working Ranges - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

Stick Digging Force (ISO)
Maximum Loading Height
Maximum Digging Depth
Maximum Depth Cut for 2440 mm (8'0") Level Bottom
Maximum Cutting Height
Maximum Reach - Ground Level
Maximum Vertical Wall Digging Depth
Minimum Loading Height
Bucket Digging Force (SAE)
Bucket Digging Force (ISO)
Stick Digging Force (SAE)


Note (2)
Standard Undercarriage, Reach Boom, R 2.9 (9'6")Stick, HD 1.0 m3 (1.31yd3 ) bucket and 700mm(28 ") TG shoes, Counterweight (4.2mt / 9,260lb)
Operating Weight - North America
Note (1)
Standard Undercarriage, Reach Boom, R 2.9 (9'6")Stick, HD 1.0 m3 (1.31yd3 ) bucket and 790mm(31 ") TG shoes, Counterweight (4.2mt / 9,260lb)
Operating Weight - Europe

Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

Tail Swing Radius
Ground Clearance

Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

Transport Width - 790 mm (31 in) Shoes
Track Length - Center of Rollers
Track Gauge
Shipping Length
Shipping Height
With HD 1.0m3 bucket and 790 mm shoes.
Counterweight Clearance

Hydraulic System

Maximum Pressure - Travel
Maximum Pressure - Swing
Main System - Maximum Flow - Total
Maximum Pressure - Equipment - Normal


Swing Speed
Maximum Swing Torque

High Performance with Lower Fuel Consumption

  • Use up to 20% less fuel than the 320F excavators.
  • Match the excavator to the job using power modes including new Smart Mode that automatically matches engine and hydraulic power to digging conditions.
  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.
  • Your joystick commands adjust pump flow based on valve priority putting hydraulic pressure and flow where it needs to go giving you improved fast light-to-medium load cycle times.
  • The electronically controlled, turbocharged engine meets U.S. EPA Tier 4 Final and EU Stage IV emissions standards using a transparent aftertreatment system that requires no operator input or downtime.
  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
  • Don't let the temperature stop you from working. The excavator has a standard high-ambient temperature capability of 125 º F (52º C) and cold start capability of 0º F (-18º C). An optional -25º F (-32º C) cold start package is available .
  • Work up to 9,480 feet (3000 meters) above sea level without de-rating.
  • Track your performance through standard Product Link that provides location, machine hours, fuel usage, productivity, idle time, diagnostic codes and other machine data on demand through VisionLink ® online interface.

Reliable, High and Low, Heat and Cold


  • Work up to 3000 m (9,840 ft) above sea level without de-rating.

  • Standard high-ambient temperature capability is 52º C (125º F) with cold start capability at –32º C (–25º F). 

  • Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components.

  • Three levels of fuel filtration protect the engine from dirty diesel fuel.

  • Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to increase undercarriage life.

  • The center track guiding guard helps keep the excavator track aligned when traveling and working on slopes.

  • The sloped track frame prevents mud and debris accumulation, helping reduce risk of track damage.

Work in Comfort in the All-New Cab


  • The Comfort cab has a wide seat that adjusts for operators of all sizes. • Control the excavator comfortably with easy-to-reach controls all located in front of you.

  • Standard automatic climate control keeps you at the right temperature all shift long.

  • Advanced viscous mounts reduce cab vibration by up to 50 percent over previous excavator models.

  • Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, document holder, bottle holder, and coat hook are also provided.

  • Use the standard radio’s USB ports and Bluetooth® technology to connect to personal devices.

Simple to Operate


  • Start the engine with a push button; use a Bluetooth key fob, smartphone app, or the unique Operator ID function.

  • Program each joystick button, including response and pattern, using Operator ID; it will also remember climate control fan and radio settings.

  • Navigate quickly on the standard high-resolution 203 mm (8 in) touchscreen monitor or with the aid of the jog dial control.

  • Not sure how a function works or how to maintain the excavator? Always have the operator’s manual at your fingertips in the touchscreen monitor.



  • Expect up to 15 percent less maintenance cost than the 320E. (Savings calculated over 12,000 machine hours.)

  • Do all daily maintenance at ground level.

  • Check engine oil level quickly and safely with the new ground-level engine oil dipstick; fill and check engine oil on top of the machine with a conveniently located second dipstick.

  • Track your excavator’s filter life and maintenance intervals via the in-cab monitor.

  • Do no required maintenance on the Cat Clean Emissions Module.

  • Change all fuel filters at a synchronized 500 hours.

  • Expect the new air intake filter with pre-cleaner to last up to 1,000 hours – a 100 percent increase over the previous filter.

  • The new hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000-hour replacement interval – 50 percent longer than previous filter designs.

  • The new high-effi ciency electric cooling fans only run when needed and reverse to keep cores free from debris.

  • S·O·SSM ports simplify maintenance and allow for quick, easy extraction of samples for fluid analysis.



  • Access 100 percent of daily maintenance points from ground level – no need for you to climb on top of the excavator.

  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the pushbutton starting feature.

  • The standard ROPS cab meets ISO 12117-2:2008 requirements.

  • Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab posts and larger windows.

  • A rearview camera is standard, and a right-side-view camera is optional.

  • The new right-hand service platform design provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping.

  • The handrails comply with ISO 2867:2011 requirements.

  • The lower frame meets ISO 15818:2017 lifting and tie-down requirements.

Standard Equipment:

Optional Equipment:

    Hydraulic System
    • Hammer return filter circuit
    • Combined flow/high pressure aux circuit
    • Simplified combined Circuit (2 Way)
    • Quick coupler circuit for Cat Pin Grabber
    • Slider joysticks
    • Smart boom (Europe only)
    Electrical System
    • LED chassis light, LH & RH boom lights for reach, cab lights- 850 lumens
    Standard Comfort Cab
    • Roller rear suncreen
    Safety & Security
    • Radiator screen
    • RH side mirror for use with RH sideview camera or 360° visibility (Europe)
    • Heavy duty buckets 1.0m3(1.31yd3)